It looks great so far.
When I decided to quilt king quilts in sections on my home machine, I found that I needed to add the border later. It turned out to be important to stop the quilting of the sections about 4-5" from the border so that I did not have a pucker problem in adding that border. By the way, your setting blocks are perfect for some fancy quilting. I'd probably do a floral pattern there, but that's just my preference.
You can go either way with the batting but my preference is adding it later so that it is not distorted.